Water Balance Assessment for Lysimeter Station based on Water Pumping Station Kleče in Ljubljana

For soil water balance calculation two lysimeters were built on Water Pumping Station of Public Water Supply Company in Ljubljana. Soil water balance (change in storage) was calculated using precipitation, evapotranspiration, and lysimeter outflow. Outflow measurements systematically showed discrepancy between Lysimeter North and Lysimeter South, in average 300 mm/year. Yearly soil water balance calculation for the Lysimeter North shows slight decrease in water storage every year in studied period (2001 – 2004).